Rails - May 2013 - Rails 3 : Upload image file using AJAX form submission

I am trying to upload an image in RAILS 3 using AJAX form submission , this 
is my code : 

   <%= form_for(:image, :remote => true, :url => {:controller=>
''questions'',:action => ''upload''}, :html
=> {:id=>''qimage_upload''}) do |f| %>

    <%= f.file_field :image, :onchange =>
"$(this).parents(''form'').submit();"  %>

    <% end %>

I have set the :remote => true option above and submitting the form with an 
onchange event . I have the following code in controller :

def upload

     if request.xhr?
        @image = Image.new(params[:image])
        @image.save

            respond_to do |format|
                format.js { render :layout=>false }
           end
     else
           render :text => ''Request Wasnt AJAX''
     endend

If I change the field to text in the form , the request is AJAX(everything 
else remaining same) but with an image field the request is always AJAX . I 
have included ''jquery'' and ''jquery_ujs'' in
my application.js file as well.

My action renders the text everytime , the request does not seem to be AJAX 
style despite the remote tag being set (it appears correctly even in the 
final HTML). I can''t figure out where I am going wrong with this . I
have
tested it in the latest browser version of FF and Chrome , so I don''t
think
it''s a browser issue. Any ideas ?


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On Wednesday, May 8, 2013 10:40:32 AM UTC+1, Varun Jain
wrote:
>
> I am trying to upload an image in RAILS 3 using AJAX form submission , 
> this is my code : 
>
> You can''t upload files over ajax (at least not without using the
HTML5
File apis, which you may not be able to rely on). The usual trick is to do 
the upload in a hidden iframe so that it doesn''t block the
''main'' page.

Fred

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